Tails *look* to be 16mm with a 10mm earth, The earth should be 16mm to comply to the current regs, but at 10mm it is retrospectively fine until you have a CU upgrade or similar. As a point of note, 6mm earths where more common.

Do you also have a second CU? You have some newer looking tails going from left to right (the grey ones). These look to be taken from the top of the incomer of the old CU - not a great practice.

Does not look like there is too much to be concerned with when thinking of immediate danger etc, but could do with updating.

As for the tar, it is an all too common sight. It could easily have been like this from day one. The DNO are unlikely to do anything unless there is signs of overheating.

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Strange you should say that, when I saw the first photo, I thought "that could be a sign of overheating".
Of course I defer your greater experience, but on a recent thread there was a photo of a burnt out cu, and one of the tarry cables had started to "bead up" on the surface, presumably as a result of heat.
Also, there's no dust on the tar so it could be fresh.

As for the tar, it is an all too common sight. It could easily have been like this from day one. The DNO are unlikely to do anything unless there is signs of overheating.

regsmyth wrote;

Strange you should say that, when I saw the first photo, I thought "that could be a sign of overheating".
Of course I defer your greater experience, but on a recent thread there was a photo of a burnt out cu, and one of the tarry cables had started to "bead up" on the surface, presumably as a result of heat.
Also, there's no dust on the tar so it could be fresh.

Click to expand...

i would have to agree with lectrician here, was at a house doing some work couple of years back now when the YEDL guy turned up to do their bit, i enquired about the black tar ooze at this certain property and the guy seemed unconcerned and said that its quite common to see this, he said it never concerned him unless there were other indications that something was wrong.